US5444145A
Expired / Lapsed
US
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Ethylene/branched olefin copolymers
Assignee: ExxonMobil Chemical Patents Inc
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Filing: 1993-06-24
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Granted: 1995-08-22
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Expires: 2013-06-24
Abstract
Abstract High molecular weight copolymers of ethylene and 0.5-10 mole percent branched α-olefins are disclosed. The polymers have M w of 30,000-1,000,000, MWD of 2-4, a density of 0.85-0.95 g/cm 3 , and a high composition distribution breadth index. Also disclosed are a method for making the polymers with a cyclopentadienyl metallocene catalyst system, and films, fibers, molded articles and other products made from the copolymers.
Inventors
- 👤 Patrick Brant
- 👤 Jo Ann M. Canich
- 👤 Natalie A. Merrill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:04
CPC Classifications
C; C08; C08F; C08F210/00; C08F210/16; C08F4/00; C08F4/42; C08F4/44; C08F4/60; C08F4/62; C08F4/64; C08F4/659; C08F4/65912; Y; Y10; Y10S; Y10S526/00; Y10S526/943
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
47 words
A copolymer comprising ethylene and at least about 2.5 to less than 50 mole percent of an α-olefin comonomer having at least two C 1 to C 3 branches and said copolymer having a composition distribution breadth index within the range of 50% to less than 100%.
Claim 2
Dependent Claim
47 words
A copolymer comprising ethylene and at least about 2.5 to less than 50 mole percent of an α-olefin comonomer having at least two C 1 to C 3 branches and said copolymer having a composition distribution breadth index within the range of 50% to less than 100%.
Claim 3
Dependent Claim
10 words
The copolymer of claim 1 exhibiting a strain hardening characteristic.
Claim 4
Dependent Claim
31 words
The copolymer of claim 1 having suppressed phase transitions in the temperature ranges of from about -120° C. to about -90° C. and from about -30° C. to about 20° C.
Claim 5
Dependent Claim
24 words
The copolymer of claim 3 having a secondary phase transition temperature in the range of from about -50° C. up to about -30° C.
Claim 6
Dependent Claim
24 words
The copolymer of claim 3 having a secondary phase transition temperature in the range of from above about 20° C. to about 80° C.
Claim 7
Dependent Claim
13 words
The copolymer of claim 1 comprising at least about 3.0 mole % comonomer.
Claim 8
Dependent Claim
25 words
The copolymer of claim 1, wherein the comonomer having two or more branches has at least one alkyl branch adjacent to the α-olefinic unsaturation thereof.
Claim 9
Dependent Claim
35 words
The copolymer of claim 7, wherein the alkyl branch has from 1 to 3 carbon atoms and is closer to the α-olefinic unsaturation than a terminal carbon of the longest straight chain of the comonomer.
Claim 10
Dependent Claim
15 words
The copolymer of claim 7, wherein the comonomer has from 6 to 14 carbon atoms.
Claim 11
Dependent Claim
23 words
The copolymer of claim 1, wherein said branched alpha-olefin has two, three or four alkyl branches and from 6 to 14 carbon atoms.
Claim 12
Dependent Claim
66 words
A copolymer of ethylene and from about 0.5 to about 10 mole percent of a branched C 6 to C 30 α-olefin comonomer having three or four branches wherein at least one of the branches is a C 3 , C 4 or c 5 lower alkyl and said copolymer having a composition distribution breadth index of within the range of 50% to less than 100%.
Claim 13
Dependent Claim
66 words
A copolymer of ethylene and from about 0.5 to about 10 mole percent of a branched C 6 to C 30 α-olefin comonomer having three or four branches wherein at least one of the branches is a C 3 , C 4 or c 5 lower alkyl and said copolymer having a composition distribution breadth index of within the range of 50% to less than 100%.
Claim 14
Dependent Claim
18 words
The copolymer of claim 11, comprising from about 3.0 to about 8 mole percent of the branched α-olefin.
Claim 15
Dependent Claim
21 words
The copolymer of claim 1 or 11, further comprising from about 2 to about 25 mole percent of a straight-chained α-olefin.
Claim 16
Dependent Claim
26 words
The copolymer of claim 13, wherein the alpha olefin has 3 to 8 carbon atoms and is present at about 2.5 to about 10 mole percent.
Claim 17
Dependent Claim
33 words
The copolymer of claim 1 or 11, wherein the comonomer has from 6 to 14 carbon atoms and the branching substituents are selected from the group consisting of methyl, ethyl, propyl and isopropyl.
Claim 18
Dependent Claim
19 words
The copolymer of claim 1, wherein the comonomer is selected from the group consisting of 3,4-dimethylpentene-1, 4-methyl-3-ethylpentene-1, and 4,4-dimethyl-3-ethylpentene-1.
Claim 19
Dependent Claim
26 words
The copolymer of claim 1, wherein the comonomer is selected from the group consisting of 3,4-dimethylhexene-1, 3,5-dimethylhexene-1, 4-methyl-3-ethylhexene-1, 5-methyl-3-ethylhexene-1, 3-methyl-4-ethylhexene-1, 4-methyl-3-propylhexene-1, 5-methyl-3-propylhexene-1, 3,4-diethylhexene-1, 4-methyl-3-isopropylhexene-1, and 5-methyl-3-isopropylhexene-1.
Claim 20
Dependent Claim
36 words
The copolymer of claim 1 or 11, wherein the comonomer is selected from the group consisting of 3,4,4-trimethylhexene-1, 3,4,5-trimethylhexene-1, 3,5,5-trimethylhexene-1, 4,4-dimethyl-3-ethylhexene-1, 4,5-dimethyl-3-ethylhexene-1, 5,5-dimethyl-3-ethylhexene-1, 3,4-dimethyl-4-ethylhexene-1, 3,5-dimethyl-4-ethylhexene-1, 4-methyl-3,4-diethylhexene-1, 5-methyl-3,4-diethylhexene-1, 3-methyl-4,4-diethylhexene-1, 3,4,4-triethylhexene-1, 4,4-dimethyl-3-propylhexene-1, 4,5-dimethyl-3-propylhexene-1, 5,5-dimethyl-3-propylhexene-1, 4,4-dimethyl-3-isopropylhexene-1, 4,4-dimethyl-3-ethylpentene-1 and 5,5-dimethyl-3-isopropylhexene-1.
Claim 21
Dependent Claim
28 words
The copolymer of claim 1 or 11, wherein the comonomer is selected from the group consisting of 3,4,4,5-tetramethylhexene-1, 3,4,5,5-tetramethylhexene-1, 4,4,5-trimethyl-3-ethylhexene-1, 4,5,5-trimethyl-3-ethylhexene-1, 3,4,5-trimethyl-4-ethylhexene-1, 3,5,5-trimethyl-4-ethylhexene-1, 4,5-dimethyl-3,4-diethylhexene-1, 5,5-dimethyl-3,4-diethylhexene-1, 3,5-dimethyl-4,4-diethylhexene-1, and 5-methyl-3,4,4-triethylhexene-1.
Claim 22
Dependent Claim
19 words
The copolymer of claim 1 or 11, wherein the molecular weight is from about 80,000 to about 500,000 daltons.
Claim 23
Dependent Claim
40 words
A copolymer of ethylene and 3,5,5-trimethylhexene-1 wherein the content of 3,5,5-trimethylhexene-1 is at least 2.5 to less than 50 mole percent, and said copolymer has a composition distribution breadth index of within the range of 50% to less than 100%.
Claim 24
Dependent Claim
40 words
A copolymer of ethylene and 3,5,5-trimethylhexene-1 wherein the content of 3,5,5-trimethylhexene-1 is at least 2.5 to less than 50 mole percent, and said copolymer has a composition distribution breadth index of within the range of 50% to less than 100%.
Claim 25
Dependent Claim
10 words
A film comprising the copolymer of claim 1 or 11.
Claim 26
Dependent Claim
10 words
A fiber comprising the copolymer of claim 1 or 11.
Claim 27
Dependent Claim
11 words
A molded article comprising the copolymer of claim 1 or 11.
Claim 28
Dependent Claim
8 words
A film comprising the copolymer of claim 21.
Claim 29
Dependent Claim
8 words
A fiber comprising the copolymer of claim 21.
Claim 30
Dependent Claim
9 words
A molded article comprising the copolymer of claim 21.
Claim 31
Dependent Claim
21 words
The copolymer of claim 1 or 11 wherein the copolymer has a M w of from about 30,000 to about 1,000,000.
Claim 32
Dependent Claim
23 words
The copolymer of claim 1 or 11 wherein the copolymer has a M w /M n of from about 2 to about 4.
Claim 33
Dependent Claim
13 words
The copolymer of claim 21 having at least about 3.0 mole % comonomer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-08-21 | 1999-02-20 | 1999-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-08-21 | 2003-02-20 | 2003-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-08-21 | 2007-02-20 | 2007-08-22 | $7700.00 | Window Closed / Lapsed |